石膏
碱土
浸出(土壤学)
土壤盐分
盐度
肥料
化学
土壤水分
土地复垦
碱土
农学
生理盐水
土壤pH值
土壤改良剂
环境化学
环境科学
土壤科学
材料科学
生态学
生物
冶金
内分泌学
作者
Demis Andrade Foronda,Gilles Colinet
出处
期刊:Agriculture
[MDPI AG]
日期:2022-07-18
卷期号:12 (7): 1049-1049
被引量:3
标识
DOI:10.3390/agriculture12071049
摘要
Saline–alkali soils have high sodicity, high pH, and high levels of soluble salts, as well as carbonates. This study aimed to evaluate the effect of cattle manure and chicken manure combined with gypsum at three levels on reclaiming a saline–alkali soil, through a soil column experiment. Combined treatments were more effective than those of sole gypsum in reducing the initial exchangeable sodium percentage (ESP) below 5%. Electrical conductivity (ECe) was lowered below 1.6 dS m−1 by all treatments, except the control. The higher effectiveness of manures combined with gypsum can be explained by their synergistic effect on Na+ displacement and subsequent soil structure improvement, leading to an enhancement in the leaching process, and then the salinity/sodicity reduction. Soluble salts and Na+ were considerably reduced in all treatments at the first leaching. Soil ESP and ECe threshold values from the US Salinity Lab classification were reached by any treatment, except the control. The addition of cattle manure or chicken manure might enhance the reclamation effect of gypsum with leaching for some saline–alkali soils.
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